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Articles on Black-legged ticks

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The black-legged tick is the vector that spreads Lyme disease. Its bite can infect humans with the Borrelia burgdorferi bacterium. (Jim Gathany/CDC)

Lyme disease: The pathogen’s cunning strategies for persistent infection offer clues for vaccine development

The bacterium that causes Lyme disease is a master of disguise, changing its appearance to evade the immune system as it moves from the ticks that carry it to humans or animals.
Black-legged ticks carry Lyme disease, which continues to spread widely across the United States. CDC/Michael Levin

Tick bites: Every year is a bad tick year

How bad are ticks this year? An expert explains why tick-borne diseases are on the rise.
Lyme disease patients hold a rally outside the Irish Parliament. Artur Widak/NurPhoto via Getty Images

Chronic Lyme disease – does it exist?

Many patients without a diagnosis of Lyme disease report a constellation of symptoms, sometimes for years. Does chronic Lyme disease exist?

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